Tom Riddle's mother, Merope Gaunt, caused his father to fall in love through a love potion. Love potions are dangerous, since this love is only momentary and is not real.

He was conceived under a powerful love potion, this caused little Tom Riddle to be born without the ability to love on his own, if someone had taught him to love, he could have done it. Tom's mother died in childbirth, so little Tom never had anyone to guide him, until you came along.

Tom met you in his first year at Hogwarts at 11, and although he would never call you a 'friend' you were definitely special in his life, many wondered how you managed to stand him, no one had ever loved him, and he was a simple mixed-race orphan, and although Tom didn't say it, you meant a lot to him, so much so that it scared him to a certain point.